/* --- Değişkenler (Güncellenmiş Lacivert/Mavi Renk Paleti) --- */
:root {
    --bg-dark: #0f172a; 
    --bg-surface: #1e293b; 
    --bg-surface-hover: #334155;
    --text-main: #f1f5f9; 
    --text-muted: #94a3b8; 
    --accent-color: #38bdf8; 
    --accent-hover: #0ea5e9;
    --border-color: #334155;
    
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
}

/* --- Temel Sıfırlama & Yapı --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3 {
    font-family: var(--font-heading);
    color: #FFFFFF;
}

a {
    text-decoration: none;
    transition: 0.3s ease;
}

/* --- Navigasyon --- */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2.5rem 10%;
    background-color: transparent;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid transparent;
    transition: all 0.4s ease;
}

/* Kaydırma Efekti Tetiklendiğinde Devreye Girecek Stil */
.navbar.scrolled {
    background-color: rgba(15, 23, 42, 0.90);
    backdrop-filter: blur(12px);
    padding: 1.25rem 10%;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

/* --- Logo Stili --- */
.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 58px;
    width: auto;
    display: block;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.logo:hover img {
    transform: scale(1.05);
}

/* --- Menü Linkleri --- */
.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-main);
    font-size: 0.95rem;
}

.nav-links a:hover {
    color: var(--accent-color);
}

/* --- Hamburger Butonu (Masaüstünde Gizli) --- */
.hamburger {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
    z-index: 101;
}

.hamburger .bar {
    width: 30px;
    height: 2px;
    background-color: var(--text-main);
    transition: all 0.3s ease;
}

/* --- Butonlar --- */
.btn-primary {
    background-color: var(--accent-color);
    color: #0f172a; /* Zıtlık için koyu metin */
    padding: 0.875rem 1.75rem;
    border-radius: 6px;
    font-weight: 600;
    display: inline-block;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    color: #ffffff;
    box-shadow: 0 4px 20px rgba(56, 189, 248, 0.3);
}

.btn-outline {
    border: 1px solid var(--border-color);
    padding: 0.5rem 1.25rem;
    border-radius: 6px;
}

.btn-outline:hover {
    border-color: var(--text-main);
}

/* --- Hero Alanı --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 0 10%;
    margin-top: 60px;
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.accent-text {
    color: var(--accent-color);
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 600px;
}

/* --- Ortak Bölüm Stilleri --- */
section {
    padding: 8rem 10%;
}

.section-header {
    margin-bottom: 4rem;
    max-width: 600px;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* --- Kart Izgarası (Grid) --- */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    border-radius: 12px;
    transition: 0.3s ease;
}

.card:hover {
    background-color: var(--bg-surface-hover);
    border-color: #444;
    transform: translateY(-5px);
}

.card .icon {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 1.5rem;
}

.card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* --- Süreç --- */
.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
}

.step-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    color: var(--border-color);
    font-weight: 700;
    margin-bottom: 1rem;
}

.step h3 {
    margin-bottom: 1rem;
}

.step p {
    color: var(--text-muted);
}

/* --- İletişim --- */
.contact-box {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 5rem 2rem;
    border-radius: 16px;
    text-align: center;
}

.contact-box h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-box p {
    color: var(--text-muted);
    margin-bottom: 3rem;
}

.contact-methods {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
    color: var(--text-main);
    background-color: var(--bg-dark);
    padding: 1rem 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.contact-item:hover {
    border-color: var(--accent-color);
}

/* --- Footer --- */
footer {
    text-align: center;
    padding: 3rem 10%;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* --- Mobil Uyumluluk (Responsive & Hamburger Menü) --- */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    section {
        padding: 5rem 5%;
    }
    
    .navbar {
        padding: 1.5rem 5%;
    }

    .navbar.scrolled {
        padding: 1rem 5%;
    }

    /* Mobilde hamburger butonunu göster */
    .hamburger {
        display: flex;
    }

    /* Mobilde menü linklerini sağa gizle (Tam Ekran Menü) */
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background-color: var(--bg-dark);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 3rem;
        transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .nav-links a {
        font-size: 1.5rem;
    }

    /* active class'ı eklendiğinde menü ekrana kayarak gelsin */
    .nav-links.active {
        right: 0;
    }

    /* Hamburger ikonunun X işaretine dönüşme animasyonu */
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
        background-color: var(--accent-color);
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
        background-color: var(--accent-color);
    }
}

/* Erişilebilirlik ve güvenli etkileşim iyileştirmeleri */
.hamburger {
    border: 0;
    padding: 0;
    background: transparent;
}

a:focus-visible,
button:focus-visible {
    outline: 3px solid var(--accent-color);
    outline-offset: 4px;
}

.icon-svg {
    width: 2.5rem;
    height: 2.5rem;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.7;
    stroke-linecap: round;
    stroke-linejoin: round;
}

body.menu-open {
    overflow: hidden;
}

@media (max-width: 768px) {
    .logo img {
        height: 48px;
    }
}

/* v1.1: erişilebilirlik ve hareket tercihi */
.skip-link {
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 1000;
    padding: 0.75rem 1rem;
    border-radius: 6px;
    background: var(--accent-color);
    color: var(--bg-dark);
    font-weight: 700;
    transform: translateY(-200%);
}

.skip-link:focus {
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* v1.2: ekran dışında kalan bölümlerin ilk çizim maliyetini azaltır. */
@supports (content-visibility: auto) {
    .services,
    .process,
    .contact,
    footer {
        content-visibility: auto;
        contain-intrinsic-size: auto 700px;
    }
}

/* --- Yasal bilgilendirme sayfaları --- */
.legal-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.75rem 1.5rem;
    margin-top: 0.85rem;
}

.legal-links a {
    color: var(--text-muted);
    text-decoration: underline;
    text-underline-offset: 4px;
}

.legal-links a:hover,
.legal-links a:focus-visible,
.legal-links a[aria-current="page"] {
    color: var(--accent-color);
}

.legal-navbar {
    position: relative;
    background-color: rgba(15, 23, 42, 0.96);
}

.legal-page {
    min-height: 70vh;
    padding: 4rem 10% 6rem;
}

.legal-content {
    width: min(860px, 100%);
    margin: 0 auto;
    padding: 3rem;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    background-color: var(--bg-surface);
}

.legal-content h1 {
    margin-bottom: 0.5rem;
    font-size: clamp(2rem, 5vw, 3rem);
}

.legal-content h2 {
    margin-top: 2.25rem;
    margin-bottom: 0.75rem;
    font-size: 1.35rem;
}

.legal-content p,
.legal-content li {
    color: var(--text-muted);
}

.legal-content p + p {
    margin-top: 0.75rem;
}

.legal-content ul {
    margin: 0.75rem 0 0 1.25rem;
}

.legal-content li + li {
    margin-top: 0.5rem;
}

.legal-content a {
    color: var(--accent-color);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.legal-updated {
    margin-bottom: 2rem;
    font-size: 0.9rem;
}

.legal-note {
    padding: 1rem 1.25rem;
    border: 1px solid var(--accent-color);
    border-radius: 8px;
    background: rgba(56, 189, 248, 0.08);
    color: var(--text-main);
}

@media (max-width: 768px) {
    .legal-navbar {
        padding: 1.25rem 5%;
    }

    .legal-page {
        padding: 2.5rem 5% 4rem;
    }

    .legal-content {
        padding: 1.5rem;
    }
}

/* --- Arka plan konsepti: hafif geometrik derinlik --- */
body {
    position: relative;
    isolation: isolate;
    background-image:
        radial-gradient(circle at 82% 12%, rgba(56, 189, 248, 0.075), transparent 30rem),
        radial-gradient(circle at 10% 78%, rgba(14, 165, 233, 0.045), transparent 34rem),
        linear-gradient(rgba(148, 163, 184, 0.026) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 163, 184, 0.026) 1px, transparent 1px);
    background-size: auto, auto, 72px 72px, 72px 72px;
    background-position: center, center, -1px -1px, -1px -1px;
}

body::before,
body::after {
    content: "";
    position: fixed;
    z-index: -1;
    pointer-events: none;
    border-radius: 50%;
    filter: blur(2px);
}

body::before {
    width: 30rem;
    height: 30rem;
    top: 10rem;
    right: -13rem;
    border: 1px solid rgba(56, 189, 248, 0.10);
    box-shadow:
        0 0 0 4rem rgba(56, 189, 248, 0.014),
        0 0 0 9rem rgba(56, 189, 248, 0.010);
}

body::after {
    width: 20rem;
    height: 20rem;
    left: -11rem;
    bottom: 8rem;
    border: 1px solid rgba(148, 163, 184, 0.07);
    box-shadow: 0 0 0 5rem rgba(148, 163, 184, 0.008);
}

.hero {
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    width: min(40vw, 34rem);
    aspect-ratio: 1;
    right: 7%;
    top: 50%;
    transform: translateY(-43%);
    border: 1px solid rgba(56, 189, 248, 0.08);
    border-radius: 50%;
    box-shadow:
        inset 0 0 70px rgba(56, 189, 248, 0.018),
        0 0 0 3.5rem rgba(56, 189, 248, 0.010),
        0 0 0 7rem rgba(56, 189, 248, 0.007);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.services,
.process,
.contact {
    position: relative;
}

.card,
.contact-box,
.legal-content {
    background-image: linear-gradient(145deg, rgba(255, 255, 255, 0.018), transparent 45%);
}

@media (max-width: 900px) {
    body {
        background-size: auto, auto, 52px 52px, 52px 52px;
    }

    body::before {
        width: 20rem;
        height: 20rem;
        top: 8rem;
        right: -13rem;
    }

    body::after {
        display: none;
    }

    .hero::before {
        width: 19rem;
        right: -9rem;
        top: 42%;
        opacity: 0.72;
    }
}

@media (prefers-reduced-motion: reduce) {
    body::before,
    body::after,
    .hero::before {
        transform: none;
    }
}